\documentclass{standalone} \usepackage{tikz} \begin{document}

\begin{tikzpicture}% %微信公众号《觅宁参考》绘制，关注了解更多内容 %画图原理：螺线极坐标方程 \draw (3,0)--(0,0)--(60:3); \draw[->] plot[samples=500,domain=0:0.834] ({(0.7+1\x)cos(10pi(\x) r)},{(0.7+1\x)sin(10pi(\x) r)}); \end{tikzpicture}